John k



(NoModeL) J. K. THOMAS.

VAPOR BURNING COOKING STOVE.

Patented .12....23. 1883.

n Wnlu'ngtun. D. C.

I UNITED STATES PATENT OEEicE.

JOHB K. THOMAS, OF COLUMBUS, OHIO.

VAPOR-BURNING COOKING STOVE.

SPECIFICATION formingpart of Letters Patent No. 271,158, dated January23, 1883.

Application filed July 5, 1882. (No model.)

T 0 all whom tt may concern Be it known that 1, JOHN K. THOMAS, acitizen of the United States, residing at Go lumbus, in the county ofFranklin and State of Ohio, have invented new and usefulImproveinentsinVapor-BurningCooking-Stoves, of which the following is aspecification.

My improvement consists of a device placed upon the table-top of a vaporor hydrocarbongas stove for intensifying and equalizing the heat of theburner. The device is specially adapted for use with vapor-burningstoves now in use, having a table-top with openings above the burnersprovided with spiders for the support of the cookingvessel, leaving anunobstructed central space within the spider for the direct action ofthe flame upon the vessel or oven, but is equally well adapted for usewith a stove-top without spider-supports for the cooking-vessels. Thedevice consists of a flat heat-retaining chamber, the bottom ring-platewhereof restsupon the top-plate of the stove, while the top ring-plateof the heat-retainin g chamber forms the support for the cookingvessel.The bottom ring-plate of the device has a central opening and adepending collar surrounding the burner, and the top ring-plate has acen tral deflector and an annular opening, so that the flame from theburner entering the space between the ring-plates is deflected into theannular opening and partially into the chamber formed by the top andbottom ringplates, thus retaining the heat with an intensifying andequalizing action upon the vessel supported upon the top plate. To givefull effect to the contact of the flame upon the bottom of the oven orcooking-vessel the top ringplate is provided with cross-rods or surfaceprojections, upon which the cooking utensil rests to raise its bottomabove the flat surface of the stove-top.

Referring to the accompanying drawings, Figure 1 represents a verticalsection of a part of the stove-top plate and an elevation of so much ofthe burner of a vapor-burning stove as shows the application of the heatintensifying and equalizing device thereto, and Fig. 2 a view inperspective of the flat chambered device which constitutes myimprovement.

The stove is of the style in which a tabletop, a, supported by legs, isprovided with openings for two or more burners, b, suit-ably supportedbelow said table-top. In stoves of this style now in use such openingsare provided with spiders c for supporting the cooking-vessel and forthe diffusion of the flame against its bottom. My improvement is adaptedfor use with such a stove, with or without the spider-supportthat is, ittakes the place of the spider-support, but maybe used with itand when soused, as shown in the drawings, the spider-support is without function.-

The device which I have designed to take the place of the spider iscomposed of two ring-plates, (l and 'c, joined at their circumference bylapping ring-bands f, about an inch and a half wide, the ring-platesbeing about ten inches in diameter and forming a heat-retaining chamber.The bottom ring-plate, d, has a central opening and adepending collar,g, adapted to fit over the burner and to leave a surrounding space forsupplying it with air. The top ring-plate, c, has a central. deflector,it, connected with it by radial arms t, and an annular opening, j, aboutan inch and a half,

separates the said central deflector from the inner edge of the said topring-plate and forms the issuing opening for the flame from thechamber." The bottom ring-plate lies flat upon the table-top spiders ofthe stove, and the collarg directs the flame into the chamber, so thatstriking the central deflector it spreads out into the annular space andpartially into the chamber, which, retaining the heat, intensifies andequalizes it upon the oven or vessel which is supported upon the topring-plate. The flat surface of the top ring-plate is separated from thebottom of the cooking-vessel by means of cross-rods 70, preferably ofcopper, clinched in said plate, whereby'the flame is allowed to spreadunder the vessel'as well as under the top ring-plate. Surfaceprojections will answer this purpose, but the copper rods, which may bearranged in any suitable manner, are preferred because they increase theheating capacity of the heat-retaining chamber. Any suitable number ofcopper rods may be used for this purpose, and they maybe arranged inrings and cross-strands both upon the surface of the ringplate and ofthe central. plate deflector, but not over the annular flame-space. Itwill be understood that the flame-directing 2' averse collar projectsthrough an opening in the tahie-top or through a central opening in thespider.

The device is' made of sheet-iron, and in order to provide for cleaningthe chamber of the product of the flame each ring-plate is provided witha separate ring-band of equal width, lapping and fittin g each otherclosely, so that they can be separated ,when required, as shown in Fig.3.

I claim 1. Thccombinatiomin a vapor-burning stove, of the table-topprovided' with openings and centrally-arranged burners,with thefiat-chambered device, herein described, consisting of a bottomring-plate, 6?, having a collar, 9, a top ring-plate, 6, having acentral deflector, h, and an annular opening,j, and circumferentialringhandsfijoining said ring-plates, forminga heatretaining chamber,substantially as described, 20 for the purpose specified.

2. The vessel or oven support for vaporburning stoves herein described,consisting of top and bottom ring-plates, c d, joined by closely-fittinglapping circumferential ring- 25 bandsf, the bottom ring-plate beingprovided with a central opening and adepending collar,

g, and the top rm g-plate having a central deflector, h, an annularopening, j, and surface rods or proj ectionsk substantially asdescribed, 30 for the purpose specified.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOHN K. THOMAS.

Witnesses:

WILLIAM H. DURMroK, GEO. L. ARTZ.

